/* Complete redesign with modern, minimalist aesthetic inspired by high-end design sites */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@400;500;600;700;800;900&display=swap");

:root {
  --color-dark: #0a0a0a;
  --color-light: #fafafa;
  --color-gray: #8a8a8a;
  --color-gray-light: #e5e5e5;
  --color-accent-red: #dc2626;
  --color-accent-orange: #ea580c;
  --color-accent-cyan: #0891b2;
  --color-accent-green: #16a34a;
  --color-accent-gold: #ca8a04;

  --font-display: "Playfair Display", serif;
  --font-body: "Inter", sans-serif;

  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-light);
  color: var(--color-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Minimalist top navigation */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 250, 250, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-gray-light);
}

.nav-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-dark);
}

.lang-btn {
  background: transparent;
  border: 1px solid var(--color-dark);
  padding: 0.5rem 1.25rem;
  border-radius: 2rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-dark);
  transition: var(--transition);
  font-family: var(--font-body);
  letter-spacing: 0.02em;
}

.lang-btn:hover {
  background: var(--color-dark);
  color: var(--color-light);
}

/* Burger menu button */
.burger-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.burger-menu-btn span {
  width: 2rem;
  height: 2px;
  background: var(--color-dark);
  border-radius: 10px;
  transition: var(--transition);
  transform-origin: 1px;
}

.burger-menu-btn.active span:first-child {
  transform: rotate(45deg);
}

.burger-menu-btn.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(20px);
}

.burger-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
}

.mobile-menu-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 80%;
  max-width: 320px;
  height: 100%;
  background: var(--color-light);
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.mobile-menu.active .mobile-menu-content {
  transform: translateX(0);
}

.mobile-menu-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: var(--color-gray-light);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.mobile-menu-close svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-dark);
}

.mobile-menu-close:hover {
  background: var(--color-dark);
}

.mobile-menu-close:hover svg {
  color: white;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  padding: 5rem 2rem 2rem;
  gap: 0.5rem;
}

.mobile-nav-btn {
  background: transparent;
  border: none;
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-dark);
  text-align: left;
  position: relative;
  transition: var(--transition);
  font-family: var(--font-body);
  letter-spacing: 0.01em;
  border-radius: 0.5rem;
  opacity: 0.7;
}

.mobile-nav-btn::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--color-dark);
  transition: var(--transition);
  border-radius: 0 2px 2px 0;
}

.mobile-nav-btn:hover {
  opacity: 1;
  background: rgba(10, 10, 10, 0.03);
}

.mobile-nav-btn.active {
  opacity: 1;
  background: rgba(10, 10, 10, 0.05);
  font-weight: 700;
}

.mobile-nav-btn.active::before {
  height: 70%;
}

/* Full-screen hero with bold typography */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
  padding: 0 3rem;
  margin-top: 80px;
}

.hero-content {
  text-align: center;
  max-width: 1200px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  color: var(--color-gray);
  font-weight: 400;
  letter-spacing: 0.01em;
  max-width: 600px;
  margin: 0 auto 3rem;
}

.hero-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: var(--color-gray);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scroll-indicator {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-dark), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%,
  100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(10px);
  }
}

/* Minimalist sidebar navigation */
.sidebar-nav {
  position: fixed;
  left: 3rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: transparent;
  padding: 1.5rem 1.25rem;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sidebar-nav.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.sidebar-btn {
  background: transparent;
  border: none;
  padding: 0.875rem 1rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-dark);
  text-align: left;
  position: relative;
  transition: var(--transition);
  font-family: var(--font-body);
  letter-spacing: 0.01em;
  border-radius: 0.5rem;
  opacity: 0.6;
}

.sidebar-btn::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--color-dark);
  transition: var(--transition);
  border-radius: 0 2px 2px 0;
}

.sidebar-btn:hover {
  opacity: 0.8;
  background: rgba(10, 10, 10, 0.03);
}

.sidebar-btn.active {
  opacity: 1;
  color: var(--color-dark);
  background: rgba(10, 10, 10, 0.05);
  font-weight: 700;
}

.sidebar-btn.active::before {
  height: 70%;
}

/* Main content layout */
.main-content {
  max-width: 1600px;
  margin: 0 auto;
  padding: 6rem 3rem;
}

.content-section {
  display: none;
  min-height: 80vh;
  animation: fadeInUp 0.6s ease-out;
}

.content-section.active {
  display: block;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 2rem;
  margin-bottom: 4rem;
}

.section-number {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 300;
  color: var(--color-gray-light);
  line-height: 1;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-dark);
}

/* Large region cards with image backgrounds */
.regions-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
}

.region-card-large {
  position: relative;
  height: 500px;
  border-radius: 1rem;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.region-card-large:hover {
  transform: translateY(-8px);
}

.region-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.region-card-large:hover .region-bg {
  transform: scale(1.05);
}

.region-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(10, 10, 10, 0.8) 0%, transparent 100%);
  z-index: 1;
}

.region-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2.5rem;
  z-index: 2;
  color: white;
}

.region-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.region-name {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.region-description {
  font-size: 1rem;
  opacity: 0.9;
  max-width: 400px;
}

/* Filter tags */
.filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-tag {
  background: transparent;
  border: 1px solid var(--color-gray-light);
  padding: 0.625rem 1.5rem;
  border-radius: 2rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--color-gray);
  transition: var(--transition);
  font-family: var(--font-body);
}

.filter-tag:hover,
.filter-tag.active {
  background: var(--color-dark);
  color: var(--color-light);
  border-color: var(--color-dark);
}

/* Modern country cards grid */
.countries-grid-modern {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.country-card-modern {
  background: white;
  border-radius: 1rem;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--color-gray-light);
}

.country-card-modern:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.country-image-wrapper {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.country-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.country-card-modern:hover .country-image-wrapper img {
  transform: scale(1.05);
}

.country-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.country-info {
  padding: 1.5rem;
}

.country-info h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.country-info p {
  font-size: 0.875rem;
  color: var(--color-gray);
}

/* Materials grid with icons */
.materials-modern {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.material-item {
  padding: 2.5rem;
  background: white;
  border: 1px solid var(--color-gray-light);
  border-radius: 1rem;
  transition: var(--transition);
  cursor: pointer;
}

.material-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
}

.material-icon-wrapper {
  width: 3rem;
  height: 3rem;
  margin-bottom: 1.5rem;
}

.material-icon {
  width: 100%;
  height: 100%;
  color: var(--color-dark);
}

.material-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.material-item p {
  font-size: 0.875rem;
  color: var(--color-gray);
  line-height: 1.5;
}

/* Modern checklists */
.checklists-modern {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.checklist-card {
  background: white;
  border: 1px solid var(--color-gray-light);
  border-radius: 1rem;
  overflow: hidden;
  transition: var(--transition);
}

.checklist-card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
}

.checklist-header {
  padding: 1.5rem;
  background: var(--accent-color);
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.checklist-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.checklist-count {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
}

.checklist-items {
  list-style: none;
  padding: 0;
}

.checklist-items li {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-gray-light);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}

.checklist-items li:last-child {
  border-bottom: none;
}

.checklist-items li:hover {
  background: #fafafa;
}

.checklist-items input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
  accent-color: var(--color-dark);
}

.checklist-items label {
  cursor: pointer;
  flex: 1;
  font-size: 0.9375rem;
  color: var(--color-dark);
}

.checklist-items input[type="checkbox"]:checked + label span {
  text-decoration: line-through;
  opacity: 0.5;
}

/* About section with modern layout */
.about-modern {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
}

.about-image-wrapper {
  position: sticky;
  top: 120px;
}

.about-image {
  width: 100%;
  height: auto;
  border-radius: 1rem;
  object-fit: cover;
}

.about-content {
  padding: 2rem 0;
}

.about-name {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.about-subtitle {
  font-size: 1.125rem;
  color: var(--color-gray);
  margin-bottom: 2rem;
}

.about-text-block {
  margin-bottom: 2.5rem;
}

.about-text-block p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-dark);
}

.about-goal {
  background: #fafafa;
  padding: 2rem;
  border-radius: 1rem;
  border-left: 4px solid var(--color-dark);
  margin-bottom: 2.5rem;
}

.about-goal h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-dark);
}

.about-goal p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* Modern modal */
.modal-modern {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  overflow-y: auto;
}

.modal-modern.active {
  display: block;
}

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  animation: fadeIn 0.3s ease;
}

.modal-container {
  position: relative;
  max-width: 900px;
  margin: 5rem auto;
  background: white;
  border-radius: 1rem;
  padding: 3rem;
  animation: slideUp 0.4s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: var(--color-gray-light);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-dark);
}

.modal-close:hover {
  background: var(--color-dark);
}

.modal-close:hover svg {
  color: white;
}

.modal-body h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-dark);
}

.modal-body h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 2rem 0 1rem;
  color: var(--color-dark);
}

.modal-body p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-gray);
  margin-bottom: 1.5rem;
}

.modal-body ul {
  list-style: none;
  padding: 0;
  margin-bottom: 2rem;
}

.modal-body ul li {
  padding: 0.75rem 0 0.75rem 1.5rem;
  position: relative;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-dark);
}

.modal-body ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-gray);
}

/* FAQ Styles */
.faq-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-gray-light);
}

.faq-header h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-dark);
  margin: 0;
}

.faq-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-gray-light);
  padding-bottom: 1rem;
}

.faq-tab {
  background: transparent;
  border: 1px solid var(--color-gray-light);
  padding: 0.625rem 1.25rem;
  border-radius: 2rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--color-gray);
  transition: var(--transition);
  font-family: var(--font-body);
  white-space: nowrap;
}

.faq-tab:hover {
  background: var(--color-gray-light);
  color: var(--color-dark);
}

.faq-tab.active {
  background: var(--color-dark);
  color: var(--color-light);
  border-color: var(--color-dark);
}

.faq-content {
  padding: 1rem 0;
}

.faq-content h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--color-dark);
}

.faq-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-dark);
}

.faq-text p {
  margin-bottom: 1rem;
  color: var(--color-gray);
}

.faq-text br + br {
  margin-top: 1rem;
  display: block;
}

/* Footer */
.footer-modern {
  background: var(--color-dark);
  color: white;
  padding: 3rem;
  margin-top: 8rem;
}

.footer-content {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  font-size: 0.875rem;
  opacity: 0.7;
}

.footer-copy p {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Responsive design */
@media (max-width: 1024px) {
  .sidebar-nav {
    display: none;
  }

  .burger-menu-btn {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .nav-container,
  .main-content {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .about-modern {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-image-wrapper {
    position: static;
  }
}

@media (max-width: 768px) {
  .hero {
    height: 80vh;
    padding: 0 1.5rem;
  }

  .nav-container,
  .main-content {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .section-header {
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
  }

  .section-number {
    font-size: 3rem;
  }

  .regions-container {
    grid-template-columns: 1fr;
  }

  .countries-grid-modern {
    grid-template-columns: 1fr;
  }

  .materials-modern {
    grid-template-columns: 1fr;
  }

  .checklists-modern {
    grid-template-columns: 1fr;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .modal-container {
    margin: 2rem 1rem;
    padding: 2rem;
  }
}